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Re: [PATCH] mac80211: wait for beacon before enabling powersave

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On Wed, Jan 27, 2010 at 10:14 AM, Guy, Wey-Yi <wey-yi.w.guy@xxxxxxxxx> wrote:
> On Wed, 2010-01-27 at 10:14 -0800, Luis R. Rodriguez wrote:
>> On Wed, Jan 27, 2010 at 10:04 AM, Guy, Wey-Yi <wey-yi.w.guy@xxxxxxxxx> wrote:
>> > On Wed, 2010-01-27 at 10:01 -0800, Luis R. Rodriguez wrote:
>> >> On Tue, Jan 26, 2010 at 5:19 AM, Johannes Berg
>> >> <johannes@xxxxxxxxxxxxxxxx> wrote:
>> >> > Because DTIM information is required for powersave
>> >> > but is only conveyed in beacons, wait for a beacon
>> >> > before enabling powersave, and change the way the
>> >> > information is conveyed to the driver accordingly.
>> >> >
>> >> > mwl8k doesn't currently seem to implement PS but
>> >> > requires the DTIM period in a different way; after
>> >> > talking to Lennert we agreed to just have mwl8k do
>> >> > the parsing itself in the finalize_join work.
>> >>
>> >> Not sure if this is merged yet. If not it might be good to add to the
>> >> commit log a brief about the impact of the fix for distribution
>> >> purposes looking to cherry pick some fixes that may cure some issues.
>> >>
>> >> The impact of this fix is that the DTIM settings of > 1 would now be
>> >> respected in the odd situation a beacon would not be received prior to
>> >> association. Ensuring we use a higher DTIM would mean saving more
>> >> power as it would mean we can sleep longer.
>> >>
>> >> This is not propagated to stable but if it turns out this can enhance
>> >> power save since DTIM might usually be > 1 and the race may be more
>> >> common than we expected we may need a respective stable solution.
>> >>
>> >
>> > It will be nice to see a respective solution for stable since this
>> > impact power save which is very important for certain platform.
>>
>> Well how about your patch for stable then?
>>
> if ok with you and Johannes, I will like to see it happen, the only
> issue is, my patch only address iwlwifi but not mwl8k.

Oh, what was the issue with your patch and mwl8k?

  Luis
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